Juniper Networks M120 manual T1 PIC, Alarms, errors, and events

T1 PIC

Alarms, errors, and events

■Alarm indication signal (AIS)

■Bipolar violations

■Excessive zeros

■Far-end block errors (FEBE, E-bit errors)

■Loss of frame (LOF), Loss of signal (LOS)

■Yellow alarm bit (X-bit) disagreements

T1 PIC ■ 113